That’s the idea - you have a lot of light on tap for things like micro-photography (cameras have a hard time with low light, like microscope images) or microscopy techniques that consume a lot of light (like polarized microscopy - which uses a filter to polarize the light, and that filter eats a good % of the light.) Then for regular brightfield you have a dimmer to turn the emitter down to normal levels. As I understand it, dimming with PWM is very efficient.